Portable high chair attachment seat



FIG. 1 is a right elevational view of a portable high chair attachmentseat showing our new design;

FIG. 2 is a front elevation thereof;

FIG. 3 is a rear elevation thereof;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom plan view thereof.

The side of the attachment seat not shown is a mirror image of the sideshown in FIG. 1.

The ornamental design for a portable high chair attachment seat, asshown and described.